2Bros Parts

CYLINDER KIT 80 1993-2011 HONDA TRX300EX AT-09451-1K CA-10000-BB6K

$250.26

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Delivery to United States 5–8 business days

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Cylinder kit in 80.00 mm big-bore size for a 330 cc conversion. Supplied as a complete package with a new cylinder, matching piston assembly, rings, wrist pin, circlips, and top-end gaskets. The cylinder uses an aluminium casting with a cast iron sleeve and is intended as a direct service replacement. Bore size is 80.00 mm (+6.00 mm over standard), resulting in an approximate displacement of 330 cc. Cylinder material is Aluminium AC4B-T6, and sleeve material is cast iron FC30. Kit contents include cylinder, big-bore piston, ring set, wrist pin, two circlips, and a big-bore gasket set. Cross-reference OEM part numbers include AT-0945-1K, 12100-HM3-L00, 12191-HM3-670, 12000-HM3-671, 13011-HM3-671, 13101-HM3-670, 13111-HC0-000, and 94601-17000.

Specifications
SKU
56-K135.80.KIT
Brand
Dirt Racing
Availability
In Stock (5)

Fitments (38)

MakeModelYear
HONDATRX 300EX1993
HONDATRX 300EX1994
HONDATRX 300EX1995
HONDATRX 300EX1996
HONDATRX 300EX1997
HONDATRX 300EX1998
HONDATRX 300EX1999
HONDATRX 300EX2000
HONDATRX 300EX2001
HONDATRX 300EX2002
HONDATRX 300EX2003
HONDATRX 300EX2004
HONDATRX 300EX2005
HONDATRX 300EX2006
HONDATRX 300EX2007
HONDATRX 300EX2008
HONDATRX 300EX2009
HONDATRX 300EX2010
HONDATRX 300EX2011
HONDATRX EX 3001993
HONDATRX EX 3001994
HONDATRX EX 3001995
HONDATRX EX 3001996
HONDATRX EX 3001997
HONDATRX EX 3001998
HONDATRX EX 3001999
HONDATRX EX 3002000
HONDATRX EX 3002001
HONDATRX EX 3002002
HONDATRX EX 3002003
HONDATRX EX 3002004
HONDATRX EX 3002005
HONDATRX EX 3002006
HONDATRX EX 3002007
HONDATRX EX 3002008
HONDATRX EX 3002009
HONDATRX EX 3002010
HONDATRX EX 3002011
General Product Group
Engine
General Product Type
Cylinder Kits
General Size
80mm
Variant Id
252829
Delivery5–8 business days
14-Day ReturnsHassle-free
Easy CheckoutCard friendly
Product details

FULL DESCRIPTION

Cylinder Kit 80mm Big Bore 330cc for Honda TRX300EX

Upgrade your Honda TRX300EX with this 80mm big bore cylinder kit, designed to increase displacement to approximately 330cc. This comprehensive kit is perfect for engine rebuilds and performance enhancements, offering a direct service replacement solution.

Key Features:

  • Big-bore conversion to approximately 330cc
  • Includes new cylinder, piston assembly, rings, wrist pin, circlips, and a complete top-end gasket set
  • Durable aluminum cylinder construction with a cast iron sleeve
  • Designed for easy installation as a direct service replacement

Specifications:

  • Bore Size: 80.00 mm (a 6.00 mm increase over standard)
  • Approximate Displacement: 330 cc
  • Cylinder Material: Aluminium AC4B-T6
  • Sleeve Material: Cast iron FC30
  • Kit Contents: Cylinder, big-bore piston, ring set, wrist pin, two circlips, and a big-bore gasket set.
Before you buy

QUESTIONS? JUST ASK

Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).

Call us+44 330 133 3748
Email us[email protected]

Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.

Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. Delivery details

Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy

By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.

Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.

More answers in our FAQ.

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